Free Image Aspect Ratio Calculator | Resize Photos for YouTube & Instagram

Free Image Aspect Ratio Calculator

The ultimate tool to resize photos for YouTube, Instagram, and Print. Calculate dimensions instantly and prevent image distortion.

100% Free

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Enter dimensions or select a preset below.

Popular Presets

Aspect Ratio

Width (px)

Height (px)

Print Size Calculator Calculate physical dimensions (inches/cm)

Standard 1080p

1920 × 1080

Pixels

Ratio

16:9

Pixels

2.07 MP

Mode

Land

How to Calculate Aspect Ratio

Calculating the aspect ratio is simple: divide the width by the height. For example, an image that is 1600 pixels wide and 900 pixels high has an aspect ratio of 16:9.

Why is Aspect Ratio Important?

If you try to force an image into a different aspect ratio without cropping, it will appear stretched or squashed. Our calculator helps you find the exact height for a specific width (or vice versa) to maintain the original proportions of your photo.

Pro Tip: Always resize images using the aspect ratio lock in your editing software to ensure high-quality results.

Frequently Asked Questions

What is the difference between resolution and aspect ratio?

Resolution refers to the total number of pixels in an image (e.g., 1920x1080). Aspect ratio refers to the proportional relationship between the width and height (e.g., 16:9). You can have a low-resolution image and a high-resolution image with the exact same aspect ratio.

How do I resize an image without distortion?

To resize without distortion, you must maintain the original aspect ratio. Use our calculator above: enter your new desired width, and we will calculate the correct height automatically. Alternatively, most image editors have a "Constrain Proportions" or "Lock Aspect Ratio" checkbox.

What is the best aspect ratio for printing?

The best aspect ratio for printing depends on the paper size. Standard 4x6 or 8x12 photos use a 3:2 ratio. Standard 8x10 photos use a 4:5 ratio. Use our "Print Size Calculator" toggle to see the physical dimensions of your digital file.

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